MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65°C to 200°C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, these connectors meet rigorous military specifications. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax options. Constructed with high-strength aluminum shells and offering plating options like light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, they cater to diverse application needs. These connectors, featuring RoHS certified cadmium-free finishes, ensure reliable performance in harsh environments with conductivity, environmental resistance, and durability.